$\"\"$

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The integral is $\"\"$ .

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The trignometric identity is $\"\"$ .

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$\"\"$ .

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$\"\"$ .

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Let $\"\"$ .

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$\"\"$

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$\"\"$

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Apply power rule of integration: $\"\"$ . \ \

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$\"\"$

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Substitute $\"\"$ .

\

\

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$\"\"$

\

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$\"\"$

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$\"\"$ .